*{
    margin: 0;
    padding: 0;
    font-size: 30px;
    font-weight: bold;
    text-decoration: none;
}
body{
    background-image: url(./桌面1.jpg);
}

.big{
    width: 500px;
    height: 500px;
    background-color: rgb(17, 117, 134);
    border-radius: 10px;
    margin: auto;
}
p{
    font-size: 30px;
    text-align: center;
}
.star{
    margin-top: 20px;
    font-size: 40px;
    width: 500px;
    margin: auto;
}
.cell{
    width: 100px;
    height: 100px;
    margin-top: 20px;
    margin-left: 20px;
    border-radius: 5px;
    background-color: honeydew;
    float: left;
    /* color: whitesmoke; */
    text-align: center;
    line-height: 110px;
}
.n2{
    background-color: #eee3da;
}
.n4{
    background-color: #ede0c8;
}
.n8{
    background-color: #f2b179;
}
.n16{
    background-color: #f59563;
}
.n32{
    background-color: #f67c5f;
}
.n64{
    background-color: #f65e3b;
}
.n128{
    background-color: #edcf72;
}
.n256{
    background-color: #edcc61;
}
.n512{
    background-color: #9c0;
}
.n1024{
    background-color: #33b5e5;
}
.n2048{
    background-color: #09c;
}
.n4096{
    background-color: #a6c;
}
.n8192{
    background-color: #93c;
}

/* 游戏结束之和出来遮罩层 */
.aa{
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background-color: rgba(0,0,0,0.3);
    display: none;
}
/* 游戏结束框 */
.over{
    width: 300px;
    height: 200px;
    background-color: white;
    border-radius: 10px;
    top: 50%;
    left: 50%;
    margin-top: -100px;
    margin-left: -150px;
    position: absolute;
    text-align: center;
}
/* 重新开始样式 */
.over a{
    background-color: #9f8d77;
    border-radius: 5px;
    color: #fff;
    padding: 10px;
}